Трансформатор LUNDAHL LL1591. Инструкция на английском языке

Tibeliusgatan 7                        International   Domestic
LUNDAHL                        S-761 50 NORRTALJE         Phone    +46 - 176 13930   0176-13930
TRANSFORMERS                 SWEDEN                     Fax      +46 - 176 13935   0176-13935
Low cost audio isolation transformer
LL1591
LL1591 is a low cost audio isolation transformer, pin compatible with e.g. LL1527 and LL1581XL.
The purpose with LL1591 is to provide a low cost solution, when noise rejection requirements are small.
The LL1591 does not have internal faraday shields, nor mu metal housing.
Turns ratio:                                             1 + 1 : 1 + 1
Pin layout (viewed from component side) and winding schematics:
1                  5
4              8
3              7                 2                  6
LL1591
2   (top view)    6              4                  8
1              5
3                  7
Spacing between pins    Spacing between rows of pins
5.08 mm  (0.2")             27.94 mm  (1.1")
Dimensions:  (L x W x H above PCB, in mm)          37 x 22 x 17
Weight:                                            39 g
Rec. PCB hole diameter:                            1.5 mm
Static resistance of each primary:                 43W
Static resistance of each secondary:               55W
Distortion (primaries connected in series, source   +  6 dBU  0.1% @ 50 Hz
impedance 800W ):
+16 dBU  < 1  %  @ 50 Hz
Self resonance point :                             > 120 kHz
Optimum load for best square-wave response (sec. in   3 – 4 kW
series):
Frequency response (source 600W  , load 10 kW  serial   10 Hz -- 80 kHz +/- 1 dB
connection):
Loss across transformer (at midband, with above    0.4 dB
termination):
Isolation between windings/ between windings and core:  3 kV / 1.5 kV
Connection alternatives and suggested applications:
Serial-serial connection (1 : 1)            Parallel-parallel connection  (1 : 1)
+         for line input                               (e.g. mic input)
4             8                                4             8
3              7                               3             7
2            E   6                                         E
2             6
1              5   +                           1             5         +
+
Parallel-serial connection (1 : 2)
(e.g. mic. input)                      Parallel-split connection  (1 : 1 + 1)
+             (In this connection, the transformer picks up external magnetic fields)
4             8                                4              8        +
3              7                               3               7
2            E   6                             2             E   6
1              5                               1               5
+                                             +                              +   R050916